package thread;
import java.util.Scanner;
public class ThreadDemo23 {
    private static volatile int flag = 0;
    public static void main(String[] args) {
        Thread t1 = new Thread(()->{
            while(flag == 0) {
            }
            System.out.println("t1 线程结束");
        });

        Thread t2 = new Thread(()->{
            System.out.println("请输入flag的值:");
            Scanner scanner = new Scanner(System.in);
            flag = scanner.nextInt();
        });

        t1.start();
        t2.start();
    }
}


